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https://issues.apache.org/jira/browse/AMQ-4950?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13854091#comment-13854091
]
Timothy Bish commented on AMQ-4950:
-----------------------------------
Looks like the offending code is here in TransactionContext
{code}
// Find out if the server wants to commit or rollback.
IntegerResponse response =
(IntegerResponse)syncSendPacketWithInterruptionHandling(info);
if (XAResource.XA_RDONLY == response.getResult()) {
// transaction stops now, may be syncs that need a callback
synchronized(ENDED_XA_TRANSACTION_CONTEXTS) {
List<TransactionContext> l =
ENDED_XA_TRANSACTION_CONTEXTS.remove(x);
if (l != null && !l.isEmpty()) {
if (LOG.isDebugEnabled()) {
LOG.debug("firing afterCommit callbacks on
XA_RDONLY from prepare: " + xid);
}
for (TransactionContext ctx : l) {
ctx.afterCommit();
}
}
}
}
{code}
We blindly cast to IntegerResponse before checking for error.
> " java.lang.ClassCastException: org.apache.activemq.command.ExceptionResponse
> cannot be cast to org.apache.activemq.command.IntegerResponse, attempting to
> automatically reconnect"
> -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: AMQ-4950
> URL: https://issues.apache.org/jira/browse/AMQ-4950
> Project: ActiveMQ
> Issue Type: Bug
> Components: Broker
> Affects Versions: 5.9.0
> Reporter: Torsten Mielke
> Assignee: Torsten Mielke
> Labels: XA, prepare, transaction
>
> If an XA prepare() raises an exception back to the client it results in the
> warning
> {noformat}
> WARN FailoverTransport - Transport (tcp://127.0.0.1:61249) failed, reason:
> java.io.IOException:
> Unexpected error occured: java.lang.ClassCastException:
> org.apache.activemq.command.ExceptionResponse cannot be cast to
> org.apache.activemq.command.IntegerResponse, attempting to automatically
> reconnect
> {noformat}
> which triggers a failover reconnect and a replay of the transaction which
> then causes
> {noformat}
> 2013-12-20 13:38:12,581 [main] - WARN TransactionContext - prepare of:
> XID:[86,globalId=00000001,branchId=00000001] failed with:
> javax.jms.JMSException: Cannot call prepare now.
> {noformat}
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